uboot中用struct mtd_inifo来描述一个mtd设备,每个mtd设备又可以进行分区,其中: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 structmtd_info { //... /* MTD devices do not have any parent. MTD partitions do. */ structmtd_info *parent; /* * Offset of the ...
uboot中用struct mtd_inifo来描述一个mtd设备,每个mtd设备又可以进行分区,其中: struct mtd_info { //... /* MTD devices do not have any parent. MTD partitions do. */ struct mtd_info *parent; /* * Offset of the partition relatively to the parent offset. * Is 0 for real MTD devices (i...
static void s3c2440_hwcontrol(struct mtd_info *mtd, int dat, unsigned int ctrl) { struct nand_chip *chip = mtd->priv; struct s3c2440_nand *nand = s3c2440_get_base_nand(); //获取nand寄存器地址 if (ctrl & NAND_CLE) // 传输的是命令 writeb(dat,&nand->nfcmd); else if (ct...
static int do_helpme(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) ...
static void s3c2440_select_chip(struct mtd_info *mtd, int chipnr) { struct s3c2440_nand *nand = s3c2440_get_base_nand(); switch (chipnr) { case -1: /*取消选中*/ nand->nfcont |=(1<<1); break; case 0: /*选中*/ nand->nfcont &=~(1<<1); ...
staticvoidnand_init_chip(int i){struct mtd_info*mtd=&nand_info[i];//mtd_info属于软件的一部分,实现用户层读写等操作struct nand_chip*nand=&nand_chip[i];//属于底层,保存对nand的硬件相关操作,它是mtd_info结构体的priv私有成员ulong base_addr=base_address[i];//获取nand寄存器基地址,等于0x4E0000...
初始化函数如下:static void nand_init_chip(struct mtd_info *mtd, struct nand_chip *nand, ulong base_addr){mtd->priv = nand;nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr;board_nand_init(nand);if (nand_scan(mtd, 1) == 0) {if (!mtd->name)mtd->name = (...
a bd_info struct will be passed instead => 下面介绍uboot的一些常用命令 reset 重启uboot => help reset reset - Perform RESET of the CPU Usage: reset => printenv => printenv arch=arm baudrate=38400 board=vexpress board_name=vexpress ...
struct mtd_info *mtd = &nand_info[i]; //mtd_info属于软件的一部分,实现用户层读写等操作 struct nand_chip *nand = &nand_chip[i]; //属于底层,保存对nand的硬件相关操作,它是mtd_info结构体的priv私有成员 ulong base_addr = base_address[i]; //获取nand寄存器基地址,等于0x4E000000 ...
uboot中NANDflash的MTD驱动移植 u-boot中NAND flash的MTD驱动移植 u-boot中移植了linux中的MTD驱动源码来支持NAND flash擦除、烧写及读的驱动。MTD(memory technology device内存技术设备)是用于访问flash设备的Linux的子系统。MTD的主要目的是为了使新的存储设备的驱动更加简单并有通用接口函数可用。MTD驱动可支持CFI...